CN110566433A - Air compressor system and control method thereof - Google Patents
Air compressor system and control method thereof Download PDFInfo
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- CN110566433A CN110566433A CN201910797301.4A CN201910797301A CN110566433A CN 110566433 A CN110566433 A CN 110566433A CN 201910797301 A CN201910797301 A CN 201910797301A CN 110566433 A CN110566433 A CN 110566433A
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- air
- pressure
- compressor
- pipeline
- engine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/002—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for driven by internal combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
Abstract
The invention discloses an air compressor system and a control method thereof, wherein the air compressor system comprises a compressor, an engine, an air storage container, a pressure regulating sensor, an exhaust pressure detector and a controller, wherein an air outlet pipeline of the air storage container is connected to an air using pipeline, an air inlet valve is connected with a pressure regulating pipeline, the pressure regulating sensor is used for detecting the air pressure of the pressure regulating pipeline, the exhaust pressure detector is used for detecting the exhaust pressure of the air using pipeline, and the controller is respectively connected with the engine, the pressure regulating sensor and the exhaust pressure detector, and is used for controlling the compressor to enter a corresponding running state according to the air pressure and the exhaust pressure of the pressure regulating pipeline and controlling the engine according. The air compressor system can timely control the engine according to the actual gas consumption condition, so that the energy-saving operation of the engine can be realized, the energy consumption is reduced, and the stability of the air pressure of the air compressor system can be ensured.
Description
Technical Field
the invention relates to the technical field of air compressors, in particular to an air compressor system and a control method of the air compressor system
Background
at present, air compressors driven by diesel engines generally adopt two modes of controlling air inflow and adjusting the rotating speed of the diesel engine. When the customer uses no gas, the air compressor enters an unloading state, the unloading pressure is higher than the rated pressure, and then certain regulating pressure is generated to control the air inflow and the rotating speed of the diesel engine, because the unloading pressure is higher than the rated pressure, even if the air compressor operates in the unloading state without supplying gas, the diesel engine still operates in a state with higher load, the oil consumption is still very high, when the customer uses the gas, the unloading state is manually switched to the loading state, the system cannot automatically operate, in addition, the actual gas using condition of the customer is difficult to accurately judge according to the container pressure and the regulating pressure in the air compressor detection regulating system, the air compressor is switched back and forth in various states, and unnecessary energy consumption is caused.
Disclosure of Invention
the present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first object of the present invention is to provide an air compressor system, so as to accurately control each device according to actual air usage conditions, so as to reduce energy consumption while ensuring stable air pressure of the air compressor system.
The second objective of the present invention is to provide a control method of an air compressor system.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides an air compressor system, including a compressor, an air inlet valve connected to an air inlet pipeline of the compressor, and the compressor configured to compress air entering from the air inlet valve; the engine is used for driving the compressor to work; the air inlet pipeline of the air storage container is connected with the air outlet pipeline of the compressor, the air outlet pipeline of the air storage container is connected to the air using pipeline, and the air storage container is used for storing air compressed by the compressor; the pressure regulating sensor is arranged on a pressure regulating pipeline connected with the air inlet valve and used for detecting the gas pressure of the pressure regulating pipeline; the exhaust pressure detector is arranged on the gas using pipeline and used for detecting exhaust pressure; and the controller is respectively connected with the engine, the pressure regulating sensor and the exhaust pressure detector, and is used for controlling the compressor to enter a corresponding running state according to the gas pressure of the pressure regulating pipeline and the exhaust pressure and controlling the engine according to the running state.
According to the air compressor system disclosed by the embodiment of the invention, the gas pressure and the exhaust pressure of the pressure regulating pipeline are detected by the pressure regulating sensor and the exhaust pressure detector, the compressor is controlled to enter the corresponding running state by the controller according to the detected data, and then the engine is controlled according to the running state of the compressor, so that the stability of the air pressure can be ensured, and the energy consumption can be reduced.
In addition, the air compressor system according to the above embodiment of the present invention may further have the following additional technical features:
In one embodiment of the present invention, the pressure regulating pipeline includes a first pipe section and a second pipe section, the first pipe section is connected to the outlet pipeline of the gas storage container through a loading valve, the second pipe section is connected to the outlet pipeline of the gas storage container through a pressure regulating valve, and the loading valve is connected to the controller.
In an embodiment of the present invention, the operation state of the compressor includes a loading state, an unloading state and an unloading state, and the controller is specifically configured to: when the compressor operates in the loading state, if the gas pressure of the pressure regulating pipeline is greater than a first preset pressure, the compressor is controlled to enter the unloading state, and the rotating speed of the engine is controlled to be reduced to a first preset rotating speed; when the time for the compressor to enter the unloading state reaches a first preset time, controlling the compressor to enter an idle state, controlling the loading valve to be opened, and controlling the rotating speed of the engine to be reduced to a second preset rotating speed; and in the process that the compressor runs in the no-load state, if the exhaust pressure is less than a second preset pressure and lasts for a second preset time, controlling the compressor to enter the loading state, controlling the loading valve to close, and controlling the rotating speed of the engine to increase.
In one embodiment of the present invention, a gas release valve is further connected to the gas container, and the gas release valve is used for performing a gas release action when the compressor enters an idling state, so as to reduce the gas pressure in the gas container.
In one embodiment of the invention, the controller is configured to, when controlling the increase in the rotational speed of the engine, specifically: and controlling the rotating speed of the engine to be increased from the current rotating speed to a third preset rotating speed.
In one embodiment of the present invention, a minimum pressure valve is connected to an outlet line of the gas storage container.
In an embodiment of the present invention, the air compressor system further includes: a container pressure sensor provided in the gas storage container for detecting a gas pressure in the gas storage container; wherein the controller is also connected with the container pressure sensor.
In an embodiment of the present invention, the first preset pressure is 0.6bar to 1.5bar, the second preset pressure is 0.9bar to 1.1bar, the first preset time is 30s to 180s, and the second preset time is 1s to 3 s.
In one embodiment of the invention, the engine adopts a diesel engine, and the loading valve adopts a two-position two-way normally open electromagnetic valve.
In order to achieve the above object, a second aspect of the present invention provides a control method for an air compressor system, where the air compressor system includes a compressor, an engine, and an air storage container, an air inlet pipe of the compressor is connected to an air inlet pipe of the compressor, an air inlet pipe of the air storage container is connected to an air outlet pipe of the compressor, an air outlet pipe of the air storage container is connected to an air using pipe, and a pressure regulating pipe is connected to the air inlet valve, the control method includes the following steps: acquiring the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas using pipeline; controlling the compressor to enter a corresponding running state according to the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas using pipeline; and controlling the engine according to the running state.
The control method of the air compressor system provided by the embodiment of the invention is applied to the air compressor system provided by the embodiment, and the running state of the compressor can be switched in time according to the actual air consumption condition, so that the energy consumption is reduced while the air pressure is ensured to be stable.
In one embodiment of the present invention, the pressure regulating line includes a first pipe section connected to the outlet line of the gas storage container through a charging valve, and a second pipe section connected to the outlet line of the gas storage container through a pressure regulating valve.
In one embodiment of the present invention, the operating states of the compressor include a loaded state, an unloaded state, and the controlling the engine according to the operating states includes: when the compressor operates in the loading state, if the gas pressure of the pressure regulating pipeline is greater than a first preset pressure, the compressor is controlled to enter the unloading state, and the rotating speed of the engine is controlled to be reduced to a first preset rotating speed; when the time for the compressor to enter the unloading state reaches a first preset time, controlling the compressor to enter an idle state, controlling the loading valve to be opened, and controlling the rotating speed of the engine to be reduced to a second preset rotating speed; and in the process that the compressor runs in the no-load state, if the exhaust pressure is less than a second preset pressure and lasts for a second preset time, controlling the compressor to enter the loading state, controlling the loading valve to close, and controlling the rotating speed of the engine to increase.
additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a block diagram of an air compressor system according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an air compressor system according to an embodiment of the present invention.
reference numerals:
The control unit 1 is provided with a controller,
The compressor (2) is driven by a motor,
The gas storage container 3, the container pressure sensor 30,
the engine (4) is driven by a motor,
An air intake valve (5) is provided,
The minimum pressure valve 6, the exhaust pressure detector 60,
The pressure regulating valve 7, the regulating pressure sensor 70,
The loading valve (8) is set in the valve,
a pressure regulating pipeline 9, a first pipe section 90 and a second pipe section 91.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
the following describes an air compressor system and a control method of the air compressor system according to an embodiment of the present invention with reference to the drawings.
Fig. 1 is a block diagram illustrating an air compressor system according to an embodiment of the present invention. As shown in fig. 1, the air compressor system includes: a compressor 2, an engine 4, an air storage container 3, a regulation pressure sensor 70, an exhaust pressure detector 60, and a controller 1.
As shown in fig. 1, an air intake valve 5 is connected to an air intake line of the compressor 2, and the compressor 2 is configured to compress air entering from the air intake valve 5; the engine 4 is used for driving the compressor 2 to work; an air inlet pipeline of the air storage container 3 is connected with an air outlet pipeline of the compressor 2, the air outlet pipeline of the air storage container 3 is connected to an air using pipeline through the minimum pressure valve 6, and the air storage container 3 is used for storing air compressed by the compressor 2; the pressure regulating sensor 70 is arranged on the pressure regulating pipeline 9 connected with the air inlet valve 5 and used for detecting the gas pressure of the pressure regulating pipeline 9; an exhaust pressure detector 60 is provided on the gas piping for detecting exhaust pressure; the controller 1 is respectively connected with the engine 4, the regulating pressure sensor 70 and the exhaust pressure detector 60, and is used for controlling the compressor 2 to enter a corresponding operation state according to the gas pressure and the exhaust pressure of the pressure regulating pipeline 9 and controlling the engine 4 according to the operation state.
In this embodiment, referring to fig. 1, a minimum pressure valve 6 may be connected to an outlet pipe of the gas storage container 3 to prevent pressure leakage. Alternatively, the exhaust pressure detector 60 may be a pressure sensor or a pressure switch.
further, as shown in fig. 1, the pressure regulating pipe 9 includes a first pipe section 90 and a second pipe section 91, the first pipe section 90 is connected to the outlet pipe of the gas storage container 3 through the charging valve 8, and the second pipe section 91 is connected to the outlet pipe of the gas storage container 3 through the pressure regulating valve 7. The controller 1 is further connected with the loading valve 8, and the controller 1 controls the loading valve 8 according to the operation state. Alternatively, the regulated pressure sensor 70 may be provided on the second pipe segment 91, as shown in FIG. 1.
Specifically, the engine 4 is started, the engine 4 drives the compressor 2 to operate, air enters the compressor 2 through the air inlet valve 5, the compressor 2 can compress the air entering from the air inlet valve 5 and output the compressed air to the air storage container 3 for storage, and the compressed air stored in the air storage container 3 can be delivered to an air using pipeline through the minimum pressure valve 6 and provided to an air using device for use. An exhaust pressure detector 60 is arranged on the gas using pipeline and used for detecting the exhaust pressure, whether the customer uses gas or not is determined through the exhaust pressure, if the customer starts to use gas, the exhaust pressure is reduced, and therefore when the exhaust pressure is reduced to a certain value, the user using gas can be judged; the second pipe section 91 is provided with the regulated pressure sensor 70 for detecting the gas pressure of the second pipe section 91, and whether the gas consumption of the customer is finished or the gas consumption is reduced can be determined through the gas pressure of the second pipe section 91, if the gas consumption of the customer is finished or the gas consumption is reduced, the gas pressure in the gas outlet pipeline of the gas storage container 3 is increased, when the gas pressure is increased to a certain value, the spring in the pressure regulating valve 7 is pushed open, so that the gas pressure of the second pipe section 91 is increased, and therefore when the gas pressure of the second pipe section 91 detected by the regulated pressure sensor 70 is increased to a certain value, the gas consumption of the customer is judged to be finished or the gas consumption is reduced.
Further, in the case where the air compressor system starts the energy saving function, the controller 1 may acquire detection data of the regulation pressure sensor 70 and the exhaust pressure detector 60 and control the engine 4 and the charging valve 8 using the data. For example, when the customer uses no gas and the detected data of the pressure sensor 70 is adjusted to be greater than a certain value, the engine 4 may be controlled to reduce the rotation speed, and the opening of the intake valve 5 may be reduced by opening the charging valve 8 to reduce unnecessary energy consumption to the maximum extent; and when the customer gas consumption and the detection data of the exhaust pressure detector 60 are less than a certain value, the engine 4 is controlled to accelerate to ensure the gas consumption demand of the customer. Therefore, the air compressor system is in a state suitable for the current working environment through the control of the controller 1, the energy consumption of the air compressor can be saved through the switching of different states, and the service life of the air compressor is prolonged.
According to an embodiment of the present invention, the operating state of the compressor 2 comprises a loading state, an unloading state and an unloading state, and the controller 1 is specifically configured to: when the compressor 2 operates in a loading state, if the gas pressure of the pressure regulating pipeline 9 is greater than a first preset pressure, the compressor 2 is controlled to enter an unloading state, and the rotating speed of the engine 4 is controlled to be reduced to a first preset rotating speed; controlling the compressor 2 to enter an unloaded state and controlling the charging valve 8 to be opened when the time when the compressor 2 enters the unloaded state reaches a first preset time, so as to further reduce the opening degree of the intake valve 5 by increasing the gas pressure of the pressure regulating pipeline 9, and controlling the rotation speed of the engine 4 to be reduced to a second preset rotation speed, wherein when the opening degree of the intake valve 5 is reduced to 0, the intake valve 5 is closed; during the operation of the compressor 2 in the idling state, if the discharge pressure is less than the second preset pressure for a second preset time, it is determined that the compressor 2 enters the loading state, the loading valve 8 is controlled to be closed to increase the opening degree of the intake valve 5 by reducing the gas pressure of the pressure regulating line 9, and the rotation speed of the engine 4 is controlled to be increased, for example, to a third preset rotation speed. The first preset rotating speed can be greater than or equal to the second preset rotating speed, and both the first preset rotating speed and the second preset rotating speed are less than the third preset rotating speed.
Specifically, after the air compressor system starts the energy-saving function, when the compressor 2 operates in the loading state, if the customer stops using air, the air pressure in the air storage container 3 increases, the air in the air storage container 3 can flow to the loading valve 8 and the pressure regulating valve 7 through the air outlet pipeline of the air storage container 3, at this time, the loading valve 8 is still in the closing state, when the air pressure in the air outlet pipeline of the air storage container 3 reaches a certain value, the spring in the pressure regulating valve 7 can be pushed open, so that the pressure of the second pipe section 91 increases, the opening degree of the air inlet valve 5 decreases, and the air input amount is greatly reduced. When the gas pressure of the second pipe section 91 detected by the regulation pressure sensor 70 is greater than the first preset value, the controller 1 controls the rotation speed of the engine 4 to be reduced to the first preset rotation speed, and the system is in an unloading state. When the system is in the unloaded state for the first preset time, the controller 1 controls the loading valve 7 to be opened, so that the opening degree of the air inlet valve 5 is reduced and closed, and controls the rotating speed of the engine 4 to be reduced to the second preset rotating speed, and the system is in the unloaded state.
Further, when the exhaust pressure is smaller than the second preset pressure and continues for a second preset time, the controller 1 controls the loading valve 8 to close, and the engine 4 accelerates to a third preset rotation speed, at this time, because the system pressure is small, the pressure regulating valve 7 is in a closed state, that is, the pressures of the first pipe section 90 and the second pipe section 91 are small, so that the opening degree of the intake valve 5 is increased, a large amount of outside air enters the compressor 2, and the system is in a loading state.
In this embodiment, the gas container 3 may be further connected to a gas release valve for performing a gas release action to reduce the gas pressure in the gas container when the compressor enters an idling state.
specifically, when the compressor 2 enters the idle state, the gas in the first pipe section 90 where the charging valve 8 is located closes the valve of the gas inlet valve 5, and the closing of the valve of the gas inlet valve 5 can drive the gas release valve to open, so that the gas in the gas storage container 3 is released, that is, the gas can be released all the time through the gas release valve when the compressor 2 is in the idle state. In addition, the valve of the air intake valve 5 may be provided with a hole, and since the valve of the air intake valve 5 is provided with a hole, even if the valve of the air intake valve 5 is closed, a certain amount of air intake can be ensured, so that the whole system is in a dynamic balance, and the pressure of the gas in the gas storage container 3 can be maintained within a certain range, such as 3-4 kg
Alternatively, the purge valve may be a solenoid valve, which may be controlled by the controller 1, and the controller 1 may control the purge valve to perform a purge action to reduce the gas pressure in the gas storage container 3 when the compressor 2 enters an unloaded state.
Therefore, when the gas pressure of the second pipe section 91 is greater than the first preset pressure and the first preset time is maintained, the customer is judged not to use gas, the compressor 2 is controlled to be in the no-load state, the rotating speed of the engine 4 is controlled to be reduced, the air release valve acts, the rotating speed of the engine 4 is controlled to be low, the pressure of the air storage container 3 is small, the oil consumption of the engine 4 is small, and the purpose of energy conservation is achieved; and when the exhaust pressure is smaller than the second preset pressure, judging that the customer uses the gas, and increasing the rotating speed of the engine again. Whether the customer is using gas is judged through the above mode, and the judgment accuracy rate is high, and this control mode can avoid the air compressor machine system to start repeatedly, has solved the unstable problem that the air compressor machine system started repeatedly and caused.
In one embodiment of the present invention, the pressure of the gas storage container 3 in the loaded state is: 7 ~ 40 kilograms, 4 rotational speeds of engine are: 1600-2300 RPM; the pressure of the gas container 3 in the unloading state is 1-2 kilograms more than that in the loading state, and the pressure of the gas container 3 in the no-load state is: 3-4 kg, the rotating speed of the engine 4 in the no-load state and the unloading state can be the same, and is 1200 or 1300RPM, in addition, under the loading state, the load of the engine is 50% -60%, and under the no-load state, the load is only 15% -20%, so under the no-load state, the engine is more oil-saving and energy-saving.
Further, the first predetermined time, the first predetermined pressure, the second predetermined time and the second predetermined pressure mentioned above can be adjusted according to the field working condition to meet the field working condition, so as to achieve the optimal effect. Specifically, the first preset pressure may be 0.6 to 1.5bar, the second preset pressure may be 0.9 to 1.1bar, the first preset time may be 30 to 180s, and the second preset time may be 1 to 3 s.
in an example of the present invention, a value of the first preset pressure may be 0.7bar, a value of the second preset pressure may be 1bar, a value of the first preset time may be 60s, and a value of the second preset time may be 2 s. When the compressor 2 is operated in the loading state, the regulation pressure sensor 70 detects that the air pressure in the second pipe section 91 is greater than 0.7bar, it is determined that the user is not using air, the controller 1 controls the compressor 2 to enter the unloading state, and controls the rotation speed of the engine 4 to be reduced to a first preset rotation speed, such as 1200 RPM or 1300 RPM. When the unloading state lasts 60s, the compressor 2 is controlled to enter the no-load state, the loading valve 8 is controlled to be opened (at the moment, the opening degree of the air inlet valve 5 is further reduced), and meanwhile, the engine 4 is controlled to reduce the rotating speed to a second preset rotating speed, such as 1200 RPM or 1300RPM, so that the oil consumption of the engine 4 can be reduced to a certain extent, and energy conservation is realized. When the compressor 2 enters the no-load state, the exhaust pressure detector 60 continuously monitors the exhaust pressure, when the exhaust pressure is lower than 1bar and continues for 2s, it is determined that the user starts to use gas, the controller 1 controls the compressor 2 to enter the loading state, controls the loading valve 8 to close (at this time, the opening degree of the intake valve 5 starts to increase), and controls the engine 4 to increase the rotating speed to a third preset rotating speed, for example, at a certain value of 1600-2300RPM, the engine 4 maintains the third preset rotating speed to rotate, so that it can be ensured that the working pressure of the air compressor system is stable in the loading state.
In the embodiment of the present invention, when the gas pressure of the second pipe section 91 reaches a certain value, the opening degree of the intake valve 5 gradually decreases as the gas pressure of the second pipe section 91 increases. Alternatively, an opening degree detector may be further disposed at the air intake valve 5 to detect the opening degree of the air intake valve 5, and the opening degree detector is connected to the controller 1, and when the opening degree of the air intake valve 5 is reduced to a preset value before the gas pressure of the second pipe section 91 reaches the first preset pressure, for example, to half of the maximum opening degree, the controller 1 may control the rotation speed of the engine 4 to be reduced, for example, to a fourth preset rotation speed, which is greater than the first preset rotation speed, the second preset rotation speed, and less than the third preset rotation speed.
according to an embodiment of the present invention, as shown in fig. 1, the air compressor system may further include a container pressure sensor 30, the container pressure sensor 30 being provided in the air storage container 3 for detecting the gas pressure in the air storage container 3; wherein the controller 1 is further connected to the container pressure sensor 30 to display the gas pressure in the gas container 3 through the user interface of the controller 1.
In this embodiment, when the customer uses the gas, the gas pressure of the gas storage container 3 is maintained within a stable range; when the customer does not use gas, the gas storage container 3 only admits gas and does not give vent to anger, and the gas pressure of the gas storage container 3 will gradually increase. Therefore, the client can judge the current state of the air storage container 3 through the gas pressure in the air storage container 3 displayed by the user interface, and further can perform air discharge treatment or increase the air consumption of the air compressor system when the gas pressure of the air storage container 3 is greater than a certain value, so as to avoid the damage of the air storage container 3 caused by overhigh air pressure; and when the gas pressure of the gas storage container 3 is less than a certain value, the gas consumption can be reduced to ensure the continuous supply of gas.
Alternatively, the controller 1 may control the purge valve to be opened when the compressor 2 enters an idle state, and further may control the purge valve to be closed when the gas pressure in the gas storage container 3 is reduced to a certain value.
in this embodiment, the pressure regulating valve 7 may be a mechanical valve, requiring manual adjustment of the actuation threshold of the pressure regulating valve 7; the pressure regulating valve 7 may be an electronic valve, and in the case of an electronic valve, it may be connected to the controller 1, and the operation threshold of the pressure regulating valve 7 may be set by the controller 1. For example, when the actuation threshold is 7 kg, the mechanical valve is set to 7 kg and then settled, if it is to become 8 kg, the mechanical valve needs to be adjusted manually by mechanical means, and if it is an electronic valve, it can be directly set on the controller 1, for example, by a user interface input of the controller 1.
further, when the gas pressure of the gas outlet pipeline of the gas storage container 3 is greater than the action threshold value, the pressure regulating valve 7 is automatically opened, and when the gas pressure of the gas outlet pipeline of the gas storage container 3 is less than the action threshold value, the pressure regulating valve 7 is automatically closed. Therefore, the air pressure of the air compressor system can be improved to a certain extent through the pressure regulating valve 7, and therefore the air compressor system can work safely. Wherein, the action threshold value is larger than the first preset pressure.
According to one embodiment of the invention, the engine 4 is a diesel engine, and the charging valve 8 is a two-position two-way normally open solenoid valve.
In the embodiment, the diesel engine is used as the engine 4, so that the cost can be effectively saved, and the use cost of the air compressor can be reduced; the two-position two-way normally open electromagnetic valve is used as the loading valve 8, so that the design requirement of the air compressor can be met, the air pressure of the air storage container 3 can be adjusted, and the normal and safe operation of the air compressor system can be ensured.
in summary, the air compressor system according to the embodiment of the invention can adjust the air pressure of the engine and the air storage container in time according to the actual air consumption condition, so that the energy consumption can be effectively reduced while the air pressure is stable.
Further, the invention provides a control method of the air compressor system.
in this embodiment, the air compressor system includes a compressor, an engine, and an air container, an air inlet pipe of the compressor is connected with an air inlet valve, an air inlet pipe of the air container is connected with an air outlet pipe of the compressor, the air outlet pipe of the air container is connected to an air using pipe, and the air inlet valve is further connected with a pressure regulating pipe.
As shown in fig. 2, the control method of the air compressor system includes the steps of:
and S1, acquiring the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas using pipeline.
And S2, controlling the compressor to enter a corresponding operation state according to the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas using pipeline.
And S3, controlling the engine according to the running state.
specifically, the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas pipeline are obtained, then the running state of the compressor is determined according to the obtained gas pressure data to switch, and finally the engine is controlled according to the running state of the compressor.
According to one embodiment of the present invention, a pressure regulating pipeline includes a first pipe section and a second pipe section, the first pipe section is connected to an outlet pipeline of an air storage container through a loading valve, the second pipe section is connected to the outlet pipeline of the air storage container through a pressure regulating valve, and an operation state of a compressor including a loading state, an unloading state and an idling state controls an engine according to the operation state, including: when the compressor runs in a loading state, if the gas pressure of the pressure regulating pipeline is greater than a first preset pressure, the compressor is controlled to enter an unloading state, and the rotating speed of the engine is controlled to be reduced to a first preset rotating speed; when the time for the compressor to enter the unloading state reaches a first preset time, controlling the compressor to enter an idle state, controlling a loading valve to be opened, and controlling the rotating speed of the engine to be reduced to a second preset rotating speed; and in the process that the compressor runs in the idle state, if the exhaust pressure is less than a second preset pressure and lasts for a second preset time, controlling the compressor to enter a loading state, controlling the loading valve to close, and controlling the rotating speed of the engine to increase.
wherein the first preset pressure is 0.6-1.5 bar, such as 0.7bar, the second preset pressure is 0.9-1.1 bar, such as 1.0bar, the first preset time is 30-180 s, such as 60s, and the second preset time is 1-3 s, such as 2 s.
It should be noted that, for other specific embodiments of the control method of the air compressor system according to the embodiment of the present invention, reference may be made to the above description of the specific embodiments of the air compressor system.
According to the control method of the air compressor system, the engine and the loading valve are controlled through the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas using pipeline, so that the energy consumption can be effectively reduced while the stability of the gas pressure is ensured.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
in the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. an air compressor machine system, its characterized in that includes:
The air inlet pipeline of the compressor is connected with an air inlet valve, and the compressor is used for compressing air entering from the air inlet valve;
The engine is used for driving the compressor to work;
the air inlet pipeline of the air storage container is connected with the air outlet pipeline of the compressor, the air outlet pipeline of the air storage container is connected to the air using pipeline, and the air storage container is used for storing air compressed by the compressor;
The pressure regulating sensor is arranged on a pressure regulating pipeline connected with the air inlet valve and used for detecting the gas pressure of the pressure regulating pipeline;
The exhaust pressure detector is arranged on the gas using pipeline and used for detecting exhaust pressure;
And the controller is respectively connected with the engine, the pressure regulating sensor and the exhaust pressure detector, and is used for controlling the compressor to enter a corresponding running state according to the gas pressure of the pressure regulating pipeline and the exhaust pressure and controlling the engine according to the running state.
2. The air compressor system of claim 1, wherein the pressure regulating line comprises a first pipe section and a second pipe section, the first pipe section is connected to the outlet line of the air storage container through a charging valve, the second pipe section is connected to the outlet line of the air storage container through a pressure regulating valve, and the charging valve is connected to the controller.
3. The air compressor system of claim 2, wherein the operating states of the compressor include a loaded state, an unloaded state, and the controller is specifically configured to:
When the compressor operates in the loading state, if the gas pressure of the pressure regulating pipeline is greater than a first preset pressure, the compressor is controlled to enter the unloading state, and the rotating speed of the engine is controlled to be reduced to a first preset rotating speed;
When the time for the compressor to enter the unloading state reaches a first preset time, controlling the compressor to enter an idle state, controlling the loading valve to be opened, and controlling the rotating speed of the engine to be reduced to a second preset rotating speed;
and in the process that the compressor runs in the no-load state, if the exhaust pressure is less than a second preset pressure and lasts for a second preset time, controlling the compressor to enter the loading state, controlling the loading valve to close, and controlling the rotating speed of the engine to increase.
4. The air compressor system of claim 3, wherein a deflation valve is further connected to the air storage container, and the deflation valve is used for performing a deflation action when the compressor enters an idling state so as to reduce the pressure of the gas in the air storage container.
5. the air compressor system of claim 3, wherein the controller is configured to, when controlling the increase in the rotational speed of the engine, specifically:
and controlling the rotating speed of the engine to be increased from the current rotating speed to a third preset rotating speed.
6. The air compressor system of claim 1, wherein a minimum pressure valve is connected to an air outlet line of the air storage container.
7. The air compressor system of claim 1, further comprising:
A container pressure sensor provided in the gas storage container for detecting a gas pressure in the gas storage container;
Wherein the controller is also connected with the container pressure sensor.
8. the air compressor system of claim 3, wherein the first preset pressure is 0.6bar to 1.5bar, the second preset pressure is 0.9bar to 1.1bar, the first preset time is 30s to 180s, and the second preset time is 1s to 3 s.
9. the air compressor system of claim 2, wherein the engine is a diesel engine, and the charge valve is a two-position two-way normally open solenoid valve.
10. The control method of the air compressor system is characterized in that the air compressor system comprises a compressor, an engine and an air storage container, an air inlet pipeline of the compressor is connected with an air inlet valve, an air inlet pipeline of the air storage container is connected with an air outlet pipeline of the compressor, an air outlet pipeline of the air storage container is connected to an air using pipeline, the air inlet valve is further connected with a pressure regulating pipeline, and the control method comprises the following steps:
Acquiring the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas using pipeline;
controlling the compressor to enter a corresponding running state according to the gas pressure of the pressure regulating pipeline and the exhaust pressure of the gas using pipeline;
And controlling the engine according to the running state.
11. The method for controlling an air compressor system according to claim 10, wherein the pressure regulating line includes a first pipe section and a second pipe section, the first pipe section is connected to the outlet line of the air storage container through a charging valve, and the second pipe section is connected to the outlet line of the air storage container through a pressure regulating valve.
12. The control method of the air compressor system according to claim 11, wherein the operating states of the compressor include a loaded state, an unloaded state, and the controlling the engine according to the operating states includes:
When the compressor operates in the loading state, if the gas pressure of the pressure regulating pipeline is greater than a first preset pressure, the compressor is controlled to enter the unloading state, and the rotating speed of the engine is controlled to be reduced to a first preset rotating speed;
When the time for the compressor to enter the unloading state reaches a first preset time, controlling the compressor to enter an idle state, controlling the loading valve to be opened, and controlling the rotating speed of the engine to be reduced to a second preset rotating speed;
And in the process that the compressor runs in the no-load state, if the exhaust pressure is less than a second preset pressure and lasts for a second preset time, controlling the compressor to enter the loading state, controlling the loading valve to close, and controlling the rotating speed of the engine to increase.
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| CN110566433B (en) | 2021-09-17 |
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